FormFactor (FORM) CEO Slessor logs RSU conversion and 3,288-share tax withholding

Rhea-AI Filing Summary

FormFactor Inc. CEO Mike Slessor reported equity compensation activity involving restricted stock units and common shares on February 9, 2026. He exercised or converted 5,908 restricted stock units, which settled into the same number of common shares at $0 per share as part of his compensation plan.

To cover tax withholding obligations on this vesting, 3,288 common shares were withheld at a price of $94.88 per share. After these transactions, he directly beneficially owned 479,750 shares of common stock and 11,816 restricted stock units, which continue to vest in quarterly installments through August 7, 2026, subject to continued employment.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SLESSOR MIKE

(Last) (First) (Middle)

7005 SOUTHFRONT ROAD

(Street)

LIVERMORE CA 94551

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FORMFACTOR INC [ FORM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/09/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/09/2026		M		5,908	A	$0(1)	483,038	D
Common Stock	02/09/2026		F		3,288(2)	D	$94.88	479,750	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0	02/09/2026		M			5,908	(3)	(4)	Common Stock	5,908	$0	11,816	D

Explanation of Responses:

1. These shares of common stock reflect the settlement of restricted stock units of the Issuer. Each Restricted Stock Unit (RSU) is convertible into a share of common stock on a 1-for-1 basis.

2. Represents the number of shares withheld upon vesting of restricted stock units to cover tax withholding obligations.

3. The Restricted Stock Units granted on August 7, 2023 vest in twelve (12) quarterly installments beginning on November 7, 2023 and ending on August 7, 2026 and will be settled into shares of common stock on or following the vesting dates.

4. If the reporting person's employment is terminated for any reason before an applicable Vesting Date, all restricted stock units that have not yet vested shall be forfeited without consideration, except as provided in the change of control severance agreement and any other agreements regarding equity vesting and exercisability between the reporting person and Issuer, which agreements or form agreements are filed with the SEC.

Remarks:

	/s/ Stan Finkelstein, Attorney-in-fact for Mike Slessor	02/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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FAQ

What insider transactions did FORM CEO Mike Slessor report on February 9, 2026?

Mike Slessor reported converting 5,908 restricted stock units into common shares at $0 per share. Of the resulting stock, 3,288 common shares were withheld to satisfy tax obligations linked to the vesting of these equity awards.

How many FormFactor (FORM) shares does CEO Mike Slessor own after this Form 4?

After the reported transactions, Mike Slessor directly beneficially owned 479,750 shares of FormFactor common stock. He also held 11,816 restricted stock units that may settle into additional shares as they vest over time under the existing vesting schedule.

Were Mike Slessor’s FORM transactions open-market buys or sells?

The filing shows no open-market buys or sells. It reflects an exercise or conversion of 5,908 restricted stock units into shares and a tax-withholding disposition of 3,288 shares, automatically withheld to cover tax liabilities tied to RSU vesting.

What is the vesting schedule for Mike Slessor’s August 7, 2023 FORM RSU grant?

The restricted stock units granted on August 7, 2023 vest in twelve quarterly installments. Vesting began November 7, 2023 and continues through August 7, 2026, with units settling into common shares on or following the applicable vesting dates.

What happens to Mike Slessor’s unvested FORM restricted stock units if employment ends?

If his employment terminates before a vesting date, all unvested restricted stock units are forfeited without consideration, except as otherwise provided in his change of control severance agreement or other equity vesting agreements filed with the SEC.

Why were 3,288 FormFactor (FORM) shares withheld in Mike Slessor’s Form 4?

The 3,288 shares of common stock were withheld upon RSU vesting to cover tax withholding obligations. This tax-withholding disposition is coded as “F,” indicating payment of tax liability by delivering or withholding company shares instead of paying cash.